"For once I think Gove was effective and showed Harman (again) to be the wishy washy PC idiot she is."
I just watched the clip and this is what I think of it, since you asked!
I think that Gove came across as defensive, shouty [he began to shout/raise his tone and speak quickly before she did], attacking at a personal level and aggressive. He did not offer any reasoned talk/debate/discussion about the situation. What he did say, sounded hollow and shallow and as if he had never picked up a single history or sociology book or research paper in his life. He was not listening to her at all and actually, in my opinion, didn't even state his own opinion because all he was doing was trying to belittle her.
Harriet Harman, came across as a sound minded, coherant, reasoned person who was not excusing the riots. She was attempting to scratch the surface as to why the riots happened/happening, but as she kept saying, that was for a later date whilst peace is restored, first and foremost.
Sorry, but I think he looked pretty silly.